Multi-objective topology optimization and structural analysis of periodic spaceframe structures

Reduction of structural weight provides significant benefits in many engineering applications. While methods to optimise structural shape and topology of both continuous solids and discrete frame structures have existed for a while, the advent of additive layer manufacturing processes has enabled mo...

Full description

Bibliographic Details
Main Authors: Jarad Lim, Chao You, Iman Dayyani
Format: Article
Language:English
Published: Elsevier 2020-05-01
Series:Materials & Design
Online Access:http://www.sciencedirect.com/science/article/pii/S026412752030085X
id doaj-b3a1aabc8ded474783108823df228fe5
record_format Article
spelling doaj-b3a1aabc8ded474783108823df228fe52020-11-25T02:05:32ZengElsevierMaterials & Design0264-12752020-05-01190Multi-objective topology optimization and structural analysis of periodic spaceframe structuresJarad Lim0Chao You1Iman Dayyani2Centre for Structures, Assembly and Intelligent Automation, Cranfield University, MK43 0AL, UKCentre for Structures, Assembly and Intelligent Automation, Cranfield University, MK43 0AL, UKCorresponding author.; Centre for Structures, Assembly and Intelligent Automation, Cranfield University, MK43 0AL, UKReduction of structural weight provides significant benefits in many engineering applications. While methods to optimise structural shape and topology of both continuous solids and discrete frame structures have existed for a while, the advent of additive layer manufacturing processes has enabled more complex geometries to be feasible. In this paper, a periodic spaceframe structure is designed for minimum mass and maximum effective flexural and torsional rigidities. A method of parametrising the spaceframe through its constituent unit cells is proposed, and Genetic Algorithm (GA) multi-objective optimisation is used to optimise its topology, size and geometry as a generic structure. The superior performance of the topology optimised periodic spaceframe is highlighted in terms of structural rigidity, large deformation capability, buckling and vibrational modal analysis in compare to equivalent beam structures of identical weight and comparable domain. The results show that the proposed method can effectively generate lightweight substitute structures of great mechanical performance in many beam structures applications, such as: aircraft wing spars. The periodic spaceframe is applied into a conventional aircraft wing structure to demonstrate the possibilities of promoting weight saving in the design of civil aircraft wings. Keywords: Periodic structures, Multi-objective topology optimization, Structural analysis, Aircraft wing structurehttp://www.sciencedirect.com/science/article/pii/S026412752030085X
collection DOAJ
language English
format Article
sources DOAJ
author Jarad Lim
Chao You
Iman Dayyani
spellingShingle Jarad Lim
Chao You
Iman Dayyani
Multi-objective topology optimization and structural analysis of periodic spaceframe structures
Materials & Design
author_facet Jarad Lim
Chao You
Iman Dayyani
author_sort Jarad Lim
title Multi-objective topology optimization and structural analysis of periodic spaceframe structures
title_short Multi-objective topology optimization and structural analysis of periodic spaceframe structures
title_full Multi-objective topology optimization and structural analysis of periodic spaceframe structures
title_fullStr Multi-objective topology optimization and structural analysis of periodic spaceframe structures
title_full_unstemmed Multi-objective topology optimization and structural analysis of periodic spaceframe structures
title_sort multi-objective topology optimization and structural analysis of periodic spaceframe structures
publisher Elsevier
series Materials & Design
issn 0264-1275
publishDate 2020-05-01
description Reduction of structural weight provides significant benefits in many engineering applications. While methods to optimise structural shape and topology of both continuous solids and discrete frame structures have existed for a while, the advent of additive layer manufacturing processes has enabled more complex geometries to be feasible. In this paper, a periodic spaceframe structure is designed for minimum mass and maximum effective flexural and torsional rigidities. A method of parametrising the spaceframe through its constituent unit cells is proposed, and Genetic Algorithm (GA) multi-objective optimisation is used to optimise its topology, size and geometry as a generic structure. The superior performance of the topology optimised periodic spaceframe is highlighted in terms of structural rigidity, large deformation capability, buckling and vibrational modal analysis in compare to equivalent beam structures of identical weight and comparable domain. The results show that the proposed method can effectively generate lightweight substitute structures of great mechanical performance in many beam structures applications, such as: aircraft wing spars. The periodic spaceframe is applied into a conventional aircraft wing structure to demonstrate the possibilities of promoting weight saving in the design of civil aircraft wings. Keywords: Periodic structures, Multi-objective topology optimization, Structural analysis, Aircraft wing structure
url http://www.sciencedirect.com/science/article/pii/S026412752030085X
work_keys_str_mv AT jaradlim multiobjectivetopologyoptimizationandstructuralanalysisofperiodicspaceframestructures
AT chaoyou multiobjectivetopologyoptimizationandstructuralanalysisofperiodicspaceframestructures
AT imandayyani multiobjectivetopologyoptimizationandstructuralanalysisofperiodicspaceframestructures
_version_ 1724937669294686208